What factors should be considered when selecting a gas detector?
When choosing a gas detector, we need to consider both our own conditions and the following situations.
1. Stability
Stability is the primary issue we must consider. What are the values of zero offset and full range offset, the smaller the better.
2. Convenience
We are all doing homework outside now. Convenience is also a factor that cannot be ignored under the premise of stability. It is lightweight, small in size, easy and comfortable to wear, and easy to maintain.
3. Applicability
Technicians identify and evaluate hazardous gases at the site of confined space operations to determine whether the sensors of the selected detectors meet the usage requirements.
4. Reliability
The longer the lifespan of a sensor, the better. Generally speaking, the minimum lifespan of a sensor is 2 years, while that of a combustible gas sensor is 2-5 years. The longer the average error time, the better the accuracy and precision, and the smaller the error value, the better.
5. Protection requirements
Whether the explosion-proof safety level is applicable to the workplace, whether the product safety has been certified, and whether there is explosion-proof certification or measurement certificate.
6. Recognizability
Whether the display area is large enough, whether the font is clear, whether the alarm sound is loud enough, and whether the alarm flashing light can be recognized from various angles.
Pay attention to the concentration measurement range of the testing instrument
Various toxic and harmful gas detectors have their fixed detection range. Only by completing the measurement of the gas detector within its measurement range can the accurate measurement of the instrument be ensured. If the measurement range is exceeded for a long time, it may cause permanent damage to the sensor.
Pay attention to the lifespan of various sensors
All kinds of gas sensors have a certain service life, that is, service life. Generally speaking, in portable instruments, the service life of LEL sensors is relatively long, usually around three years. Therefore, sensors should be tested at any time and used within their effective period as much as possible. Once a malfunction occurs, it should be replaced promptly.
